<?php
 /*
   +----------------------------------------------------------------------------+
   | ILIAS open source                                                          |
   +----------------------------------------------------------------------------+
   | Copyright (c) 1998-2001 ILIAS open source, University of Cologne           |
   |                                                                            |
   | This program is free software; you can redistribute it and/or              |
   | modify it under the terms of the GNU General Public License                |
   | as published by the Free Software Foundation; either version 2             |
   | of the License, or (at your option) any later version.                     |
   |                                                                            |
   | This program is distributed in the hope that it will be useful,            |
   | but WITHOUT ANY WARRANTY; without even the implied warranty of             |
   | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              |
   | GNU General Public License for more details.                               |
   |                                                                            |
   | You should have received a copy of the GNU General Public License          |
   | along with this program; if not, write to the Free Software                |
   | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
   +----------------------------------------------------------------------------+
*/

include_once "./Modules/SurveyQuestionPool/classes/class.SurveyQuestionGUI.php";
include_once "./Modules/Survey/classes/inc.SurveyConstants.php";

/**
* Matrix question GUI representation
*
* The SurveyMatrixQuestionGUI class encapsulates the GUI representation
* for matrix question types.
*
* @author		Helmut Schottmüller <helmut.schottmueller@mac.com>
* @version	$Id$
* @extends SurveyQuestionGUI
* @ingroup ModulesSurveyQuestionPool
*/
class SurveyMatrixQuestionGUI extends SurveyQuestionGUI 
{
	var $show_layout_row;
	
/**
* SurveyMatrixQuestionGUI constructor
*
* The constructor takes possible arguments an creates an instance of the SurveyMatrixQuestionGUI object.
*
* @param integer $id The database id of a matrix question object
* @access public
*/
  function SurveyMatrixQuestionGUI(
		$id = -1
  )

  {
		$this->SurveyQuestionGUI();
		include_once "./Modules/SurveyQuestionPool/classes/class.SurveyMatrixQuestion.php";
		$this->object = new SurveyMatrixQuestion();
		$this->show_layout_row = FALSE;
		if ($id >= 0)
		{
			$this->object->loadFromDb($id);
		}
	}

	/**
	* execute command
	*/
	function &executeCommand()
	{
		$cmd = $this->ctrl->getCmd();
		$next_class = $this->ctrl->getNextClass($this);

		$cmd = $this->getCommand($cmd);
		switch($next_class)
		{
			default:
				$ret =& $this->$cmd();
				break;
		}
		return $ret;
	}

/**
* Creates an output of the edit form for the question
*
* Creates an output of the edit form for the question
*
* @access public
*/
  function editQuestion() 
	{
		$this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_matrix.html", "Modules/SurveyQuestionPool");
	  $this->tpl->addBlockFile("OTHER_QUESTION_DATA", "other_question_data", "tpl.il_svy_qpl_other_question_data.html", "Modules/SurveyQuestionPool");
		
		$subtypes = array(
			"0" => "matrix_subtype_sr",
			"1" => "matrix_subtype_mr",
			//"2" => "matrix_subtype_text",
			//"3" => "matrix_subtype_integer",
			//"4" => "matrix_subtype_double",
			//"5" => "matrix_subtype_date",
			//"6" => "matrix_subtype_time"
		);
		
		foreach ($subtypes as $value => $text)
		{
			$this->tpl->setCurrentBlock("subtype_row");
			$this->tpl->setVariable("VALUE_SUBTYPE", $value);
			$this->tpl->setVariable("TEXT_SUBTYPE", $this->lng->txt($text));
			if ($value == $this->object->getSubtype())
			{
				$this->tpl->setVariable("CHECKED_SUBTYPE", " checked=\"checked\"");
			}
			$this->tpl->parseCurrentBlock();
		}
		
		$internallinks = array(
			"lm" => $this->lng->txt("obj_lm"),
			"st" => $this->lng->txt("obj_st"),
			"pg" => $this->lng->txt("obj_pg"),
			"glo" => $this->lng->txt("glossary_term")
		);
		foreach ($internallinks as $key => $value)
		{
			$this->tpl->setCurrentBlock("internallink");
			$this->tpl->setVariable("TYPE_INTERNAL_LINK", $key);
			$this->tpl->setVariable("TEXT_INTERNAL_LINK", $value);
			$this->tpl->parseCurrentBlock();
		}
		
		$this->tpl->setCurrentBlock("adm_content");
		$this->tpl->setVariable("TEXT_MATERIAL", $this->lng->txt("material"));
		if (count($this->object->material))
		{
			include_once "./Modules/SurveyQuestionPool/classes/class.SurveyQuestion.php";
			$href = SurveyQuestion::_getInternalLinkHref($this->object->material["internal_link"]);
			$this->tpl->setVariable("TEXT_VALUE_MATERIAL", " <a href=\"$href\" target=\"content\">" . $this->lng->txt("material"). "</a> ");
			$this->tpl->setVariable("BUTTON_REMOVE_MATERIAL", $this->lng->txt("remove"));
			$this->tpl->setVariable("BUTTON_ADD_MATERIAL", $this->lng->txt("change"));
			$this->tpl->setVariable("VALUE_MATERIAL", $this->object->material["internal_link"]);
			$this->tpl->setVariable("VALUE_MATERIAL_TITLE", $this->object->material["title"]);
			$this->tpl->setVariable("TEXT_TITLE", $this->lng->txt("title"));
		}
		else
		{
			$this->tpl->setVariable("BUTTON_ADD_MATERIAL", $this->lng->txt("add"));
		}
		$this->tpl->setVariable("TEXT_ORIENTATION", $this->lng->txt("orientation"));
		$this->tpl->setVariable("QUESTION_ID", $this->object->getId());
		$this->tpl->setVariable("VALUE_TITLE", $this->object->getTitle());
		$this->tpl->setVariable("VALUE_DESCRIPTION", $this->object->getDescription());
		$this->tpl->setVariable("VALUE_AUTHOR", $this->object->getAuthor());
		$questiontext = $this->object->getQuestiontext();
		$this->tpl->setVariable("VALUE_QUESTION", ilUtil::prepareFormOutput($this->object->prepareTextareaOutput($questiontext)));
		$this->tpl->setVariable("TEXT_TITLE", $this->lng->txt("title"));
		$this->tpl->setVariable("TEXT_AUTHOR", $this->lng->txt("author"));
		$this->tpl->setVariable("TEXT_DESCRIPTION", $this->lng->txt("description"));
		$this->tpl->setVariable("TEXT_QUESTION", $this->lng->txt("question"));
		$this->tpl->setVariable("TEXT_QUESTION_TYPE", $this->lng->txt("questiontype"));
		$this->tpl->setVariable("TEXT_OBLIGATORY", $this->lng->txt("obligatory"));
		if ($this->object->getObligatory())
		{
			$this->tpl->setVariable("CHECKED_OBLIGATORY", " checked=\"checked\"");
		}
		
		$this->tpl->setVariable("TEXT_APPEARANCE", $this->lng->txt("matrix_appearance"));
		$this->tpl->setVariable("TEXT_COLUMN_SEPARATORS", $this->lng->txt("matrix_column_separators"));
		$this->tpl->setVariable("TEXT_ROW_SEPARATORS", $this->lng->txt("matrix_row_separators"));
		$this->tpl->setVariable("TEXT_NEUTRAL_COLUMN_SEPARATOR", $this->lng->txt("matrix_neutral_column_separator"));
		$this->tpl->setVariable("DESCRIPTION_NEUTRAL_COLUMN_SEPARATOR", $this->lng->txt("matrix_neutral_column_separator_description"));
		$this->tpl->setVariable("DESCRIPTION_ROW_SEPARATORS", $this->lng->txt("matrix_row_separators_description"));
		$this->tpl->setVariable("DESCRIPTION_COLUMN_SEPARATORS", $this->lng->txt("matrix_column_separators_description"));
		if ($this->object->getRowSeparators())
		{
			$this->tpl->setVariable("CHECKED_ROW_SEPARATORS", " checked=\"checked\"");
		}
		if ($this->object->getColumnSeparators())
		{
			$this->tpl->setVariable("CHECKED_COLUMN_SEPARATORS", " checked=\"checked\"");
		}
		if ($this->object->getNeutralColumnSeparator())
		{
			$this->tpl->setVariable("CHECKED_NEUTRAL_COLUMN_SEPARATOR", " checked=\"checked\"");
		}
		
		$this->tpl->setVariable("SAVE",$this->lng->txt("save"));
		$this->tpl->setVariable("TXT_REQUIRED_FLD", $this->lng->txt("required_field"));
		$this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this, "editQuestion"));
		$this->tpl->setVariable("TEXT_QUESTION_TYPE", $this->lng->txt($this->getQuestionType()));
		$this->tpl->setVariable("TEXT_SUBTYPE", $this->lng->txt("subtype"));
		$this->tpl->setVariable("DESCRIPTION_SUBTYPE", $this->lng->txt("matrix_subtype_description"));
		$this->tpl->parseCurrentBlock();
		
		include_once "./Services/RTE/classes/class.ilRTE.php";
		$rtestring = ilRTE::_getRTEClassname();
		include_once "./Services/RTE/classes/class.$rtestring.php";
		$rte = new $rtestring();
		$rte->addPlugin("latex");		
		$rte->addButton("latex"); $rte->addButton("pastelatex");
		$rte->removePlugin("ibrowser");
		include_once "./classes/class.ilObject.php";
		$obj_id = $_GET["q_id"];
		$obj_type = ilObject::_lookupType($_GET["ref_id"], TRUE);
		$rte->addRTESupport($obj_id, $obj_type, "survey");
		
		parent::editQuestion();
  }

/**
* Creates the question output form for the learner
* 
* Creates the question output form for the learner
*
* @access public
*/
	function getWorkingForm($working_data = "", $question_title = 1, $show_questiontext = 1, $error_message = "")
	{
		$layout = $this->object->getLayout();
		$neutralstyle = "3px solid #808080";
		$bordercolor = "#808080";
		$template = new ilTemplate("tpl.il_svy_out_matrix.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
		if (count($this->object->material))
		{
			$template->setCurrentBlock("material_matrix");
			include_once "./Modules/SurveyQuestionPool/classes/class.SurveyQuestion.php";
			$href = SurveyQuestion::_getInternalLinkHref($this->object->material["internal_link"]);
			$template->setVariable("TEXT_MATERIAL", $this->lng->txt("material") . ": <a href=\"$href\" target=\"content\">" . $this->object->material["title"]. "</a> ");
			$template->parseCurrentBlock();
		}
		
		if ($this->show_layout_row)
		{
			$layout_row = $this->getLayoutRow();
			$template->setCurrentBlock("matrix_row");
			$template->setVariable("ROW", $layout_row);
			$template->parseCurrentBlock();
		}
		
		$tplheaders = new ilTemplate("tpl.il_svy_out_matrix_columnheaders.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
		if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
		{
			$tplheaders->setCurrentBlock("bipolar_start");
			$style = array();
			array_push($style, sprintf("width: %.2f%s!important", $layout["percent_bipolar_adjective1"], "%"));
			if (count($style) > 0)
			{
				$tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
			}
			$tplheaders->parseCurrentBlock();
		}
		// column headers
		for ($i = 0; $i < $this->object->getColumnCount(); $i++)
		{
			$style = array();
			if ($this->object->getColumnSeparators() == 1)
			{
				if (($i < $this->object->getColumnCount() - 1))
				{
					array_push($style, "border-right: 1px solid $bordercolor!important");
				}
			}
			array_push($style, sprintf("width: %.2f%s!important", $layout["percent_columns"] / $this->object->getColumnCount(), "%"));
			$tplheaders->setCurrentBlock("column_header");
			$tplheaders->setVariable("TEXT", ilUtil::prepareFormOutput($this->object->getColumn($i)));
			$tplheaders->setVariable("CLASS", "center");
			if (count($style) > 0)
			{
				$tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
			}
			$tplheaders->parseCurrentBlock();
		}
		if (strlen($this->object->getNeutralColumn()))
		{
			$tplheaders->setCurrentBlock("neutral_column_header");
			$tplheaders->setVariable("TEXT", ilUtil::prepareFormOutput($this->object->getNeutralColumn()));
			$tplheaders->setVariable("CLASS", "rsep");
			$style = array();
			array_push($style, sprintf("width: %.2f%s!important", $layout["percent_neutral"], "%"));
			if ($this->object->getNeutralColumnSeparator())
			{
				array_push($style, "border-left: $neutralstyle!important;");
			}
			if (count($style) > 0)
			{
				$tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
			}
			$tplheaders->parseCurrentBlock();
		}
		if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
		{
			$tplheaders->setCurrentBlock("bipolar_end");
			$style = array();
			array_push($style, sprintf("width: %.2f%s!important", $layout["percent_bipolar_adjective2"], "%"));
			if (count($style) > 0)
			{
				$tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
			}
			$tplheaders->parseCurrentBlock();
		}

		$style = array();
		array_push($style, sprintf("width: %.2f%s!important", $layout["percent_row"], "%"));
		if (count($style) > 0)
		{
			$tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
		}
		
		$template->setCurrentBlock("matrix_row");
		$template->setVariable("ROW", $tplheaders->get());
		$template->parseCurrentBlock();

		$rowclass = array("tblrow1", "tblrow2");
		for ($i = 0; $i < $this->object->getRowCount(); $i++)
		{
			$tplrow = new ilTemplate("tpl.il_svy_out_matrix_row.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
			for ($j = 0; $j < $this->object->getColumnCount(); $j++)
			{
				if (($i == 0) && ($j == 0))
				{
					if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
					{
						$tplrow->setCurrentBlock("bipolar_start");
						$tplrow->setVariable("TEXT_BIPOLAR_START", ilUtil::prepareFormOutput($this->object->getBipolarAdjective(0)));
						$tplrow->setVariable("ROWSPAN", $this->object->getRowCount());
						$tplrow->parseCurrentBlock();
					}
				}
				if (($i == 0) && ($j == $this->object->getColumnCount()-1))
				{
					if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
					{
						$tplrow->setCurrentBlock("bipolar_end");
						$tplrow->setVariable("TEXT_BIPOLAR_END", ilUtil::prepareFormOutput($this->object->getBipolarAdjective(1)));
						$tplrow->setVariable("ROWSPAN", $this->object->getRowCount());
						$tplrow->parseCurrentBlock();
					}
				}
				switch ($this->object->getSubtype())
				{
					case 0:
						$tplrow->setCurrentBlock("radiobutton");
						$tplrow->setVariable("QUESTION_ID", $this->object->getId());
						$tplrow->setVariable("ROW", $i);
						$tplrow->setVariable("VALUE", $j);
						if (is_array($working_data))
						{
							foreach ($working_data as $data)
							{
								if (($data["value"] == $j) && ($data["row"] == $i))
								{
									$tplrow->setVariable("CHECKED_RADIOBUTTON", " checked=\"checked\"");
								}
							}
						}
						$tplrow->parseCurrentBlock();
						break;
					case 1:
						$tplrow->setCurrentBlock("checkbox");
						$tplrow->setVariable("QUESTION_ID", $this->object->getId());
						$tplrow->setVariable("ROW", $i);
						$tplrow->setVariable("VALUE", $j);
						if (is_array($working_data))
						{
							foreach ($working_data as $data)
							{
								if (($data["value"] == $j) && ($data["row"] == $i))
								{
									$tplrow->setVariable("CHECKED_CHECKBOX", " checked=\"checked\"");
								}
							}
						}
						$tplrow->parseCurrentBlock();
						break;
				}
				$tplrow->setCurrentBlock("answer");
				$style = array();
				
				if ($this->object->getColumnSeparators() == 1)
				{
					if ($j < $this->object->getColumnCount() - 1)
					{
						array_push($style, "border-right: 1px solid $bordercolor!important");
					}
				}

				if ($this->object->getRowSeparators() == 1)
				{
					if ($i < $this->object->getRowCount() - 1)
					{
						array_push($style, "border-bottom: 1px solid $bordercolor!important");
					}
				}
				if (count($style))
				{
					$tplrow->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
				}
				$tplrow->parseCurrentBlock();

			}
			
			if (strlen($this->object->getNeutralColumn()))
			{
				$j = $this->object->getNeutralColumnIndex();
				switch ($this->object->getSubtype())
				{
					case 0:
						$tplrow->setCurrentBlock("neutral_radiobutton");
						$tplrow->setVariable("QUESTION_ID", $this->object->getId());
						$tplrow->setVariable("ROW", $i);
						$tplrow->setVariable("VALUE", $j);
						if (is_array($working_data))
						{
							foreach ($working_data as $data)
							{
								if (($data["value"] == $j) && ($data["row"] == $i))
								{
									$tplrow->setVariable("CHECKED_RADIOBUTTON", " checked=\"checked\"");
								}
							}
						}
						$tplrow->parseCurrentBlock();
						break;
					case 1:
						$tplrow->setCurrentBlock("neutral_checkbox");
						$tplrow->setVariable("QUESTION_ID", $this->object->getId());
						$tplrow->setVariable("ROW", $i);
						$tplrow->setVariable("VALUE", $j);
						if (is_array($working_data))
						{
							foreach ($working_data as $data)
							{
								if (($data["value"] == $j) && ($data["row"] == $i))
								{
									$tplrow->setVariable("CHECKED_CHECKBOX", " checked=\"checked\"");
								}
							}
						}
						$tplrow->parseCurrentBlock();
						break;
				}
				$tplrow->setCurrentBlock("neutral_answer");
				$style = array();
				if ($this->object->getNeutralColumnSeparator())
				{
					array_push($style, "border-left: $neutralstyle!important");
				}
				if ($this->object->getColumnSeparators() == 1)
				{
					if ($j < $this->object->getColumnCount() - 1)
					{
						array_push($style, "border-right: 1px solid $bordercolor!important");
					}
				}

				if ($this->object->getRowSeparators() == 1)
				{
					if ($i < $this->object->getRowCount() - 1)
					{
						array_push($style, "border-bottom: 1px solid $bordercolor!important");
					}
				}
				if (count($style))
				{
					$tplrow->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
				}
				$tplrow->parseCurrentBlock();
			}

			$tplrow->setVariable("TEXT_ROW", ilUtil::prepareFormOutput($this->object->getRow($i)));
			$tplrow->setVariable("ROWCLASS", $rowclass[$i % 2]);
			if ($this->object->getRowSeparators() == 1)
			{
				if ($i < $this->object->getRowCount() - 1)
				{
					$tplrow->setVariable("STYLE", " style=\"border-bottom: 1px solid $bordercolor!important\"");
				}
			}
			$template->setCurrentBlock("matrix_row");
			$template->setVariable("ROW", $tplrow->get());
			$template->parseCurrentBlock();
		}
		
		if ($question_title)
		{
			$template->setVariable("QUESTION_TITLE", ilUtil::prepareFormOutput($this->object->getTitle()));
		}
		$template->setCurrentBlock("question_data_matrix");
		if (strcmp($error_message, "") != 0)
		{
			$template->setVariable("ERROR_MESSAGE", "<p class=\"warning\">$error_message</p>");
		}
		if ($show_questiontext)
		{
			$questiontext = $this->object->getQuestiontext();
			$template->setVariable("QUESTIONTEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));
		}
		if (! $this->object->getObligatory())
		{
			$template->setVariable("OBLIGATORY_TEXT", $this->lng->txt("survey_question_optional"));
		}
		$template->parseCurrentBlock();
		return $template->get();
	}

	/**
	* Creates a HTML representation of the question
	*
	* Creates a HTML representation of the question
	*
	* @access private
	*/
	function getPrintView($question_title = 1, $show_questiontext = 1)
	{
		$layout = $this->object->getLayout();
		$neutralstyle = "3px solid #808080";
		$bordercolor = "#808080";
		$template = new ilTemplate("tpl.il_svy_qpl_matrix_printview.html", TRUE, TRUE, "Modules/SurveyQuestionPool");

		if ($this->show_layout_row)
		{
			$layout_row = $this->getLayoutRow();
			$template->setCurrentBlock("matrix_row");
			$template->setVariable("ROW", $layout_row);
			$template->parseCurrentBlock();
		}
		
		$tplheaders = new ilTemplate("tpl.il_svy_out_matrix_columnheaders.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
		if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
		{
			$tplheaders->setCurrentBlock("bipolar_start");
			$style = array();
			array_push($style, sprintf("width: %.2f%s!important", $layout["percent_bipolar_adjective1"], "%"));
			if (count($style) > 0)
			{
				$tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
			}
			$tplheaders->parseCurrentBlock();
		}
		// column headers
		for ($i = 0; $i < $this->object->getColumnCount(); $i++)
		{
			$style = array();
			if ($this->object->getColumnSeparators() == 1)
			{
				if (($i < $this->object->getColumnCount() - 1))
				{
					array_push($style, "border-right: 1px solid $bordercolor!important");
				}
			}
			array_push($style, sprintf("width: %.2f%s!important", $layout["percent_columns"] / $this->object->getColumnCount(), "%"));
			$tplheaders->setCurrentBlock("column_header");
			$tplheaders->setVariable("TEXT", ilUtil::prepareFormOutput($this->object->getColumn($i)));
			$tplheaders->setVariable("CLASS", "center");
			if (count($style) > 0)
			{
				$tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
			}
			$tplheaders->parseCurrentBlock();
		}
		if (strlen($this->object->getNeutralColumn()))
		{
			$tplheaders->setCurrentBlock("neutral_column_header");
			$tplheaders->setVariable("TEXT", ilUtil::prepareFormOutput($this->object->getNeutralColumn()));
			$tplheaders->setVariable("CLASS", "rsep");
			$style = array();
			array_push($style, sprintf("width: %.2f%s!important", $layout["percent_neutral"], "%"));
			if ($this->object->getNeutralColumnSeparator())
			{
				array_push($style, "border-left: $neutralstyle!important;");
			}
			if (count($style) > 0)
			{
				$tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
			}
			$tplheaders->parseCurrentBlock();
		}
		if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
		{
			$tplheaders->setCurrentBlock("bipolar_end");
			$style = array();
			array_push($style, sprintf("width: %.2f%s!important", $layout["percent_bipolar_adjective2"], "%"));
			if (count($style) > 0)
			{
				$tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
			}
			$tplheaders->parseCurrentBlock();
		}

		$style = array();
		array_push($style, sprintf("width: %.2f%s!important", $layout["percent_row"], "%"));
		if (count($style) > 0)
		{
			$tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
		}
		
		$template->setCurrentBlock("matrix_row");
		$template->setVariable("ROW", $tplheaders->get());
		$template->parseCurrentBlock();

		$rowclass = array("tblrow1", "tblrow2");
		
		for ($i = 0; $i < $this->object->getRowCount(); $i++)
		{
			$tplrow = new ilTemplate("tpl.il_svy_qpl_matrix_printview_row.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
			for ($j = 0; $j < $this->object->getColumnCount(); $j++)
			{
				if (($i == 0) && ($j == 0))
				{
					if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
					{
						$tplrow->setCurrentBlock("bipolar_start");
						$tplrow->setVariable("TEXT_BIPOLAR_START", ilUtil::prepareFormOutput($this->object->getBipolarAdjective(0)));
						$tplrow->setVariable("ROWSPAN", $this->object->getRowCount());
						$tplrow->parseCurrentBlock();
					}
				}
				if (($i == 0) && ($j == $this->object->getColumnCount()-1))
				{
					if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
					{
						$tplrow->setCurrentBlock("bipolar_end");
						$tplrow->setVariable("TEXT_BIPOLAR_END", ilUtil::prepareFormOutput($this->object->getBipolarAdjective(1)));
						$tplrow->setVariable("ROWSPAN", $this->object->getRowCount());
						$tplrow->parseCurrentBlock();
					}
				}
				switch ($this->object->getSubtype())
				{
					case 0:
						$tplrow->setCurrentBlock("radiobutton");
						$tplrow->setVariable("IMAGE_RADIO", ilUtil::getHtmlPath(ilUtil::getImagePath("radiobutton_unchecked.gif")));
						$tplrow->setVariable("ALT_RADIO", $this->lng->txt("unchecked"));
						$tplrow->setVariable("TITLE_RADIO", $this->lng->txt("unchecked"));
						$tplrow->parseCurrentBlock();
						break;
					case 1:
						$tplrow->setCurrentBlock("checkbox");
						$tplrow->setVariable("IMAGE_CHECKBOX", ilUtil::getHtmlPath(ilUtil::getImagePath("checkbox_unchecked.gif")));
						$tplrow->setVariable("ALT_CHECKBOX", $this->lng->txt("unchecked"));
						$tplrow->setVariable("TITLE_CHECKBOX", $this->lng->txt("unchecked"));
						$tplrow->parseCurrentBlock();
						break;
				}
				$tplrow->setCurrentBlock("answer");
				$style = array();
				
				if ($this->object->getColumnSeparators() == 1)
				{
					if ($j < $this->object->getColumnCount() - 1)
					{
						array_push($style, "border-right: 1px solid $bordercolor!important");
					}
				}

				if ($this->object->getRowSeparators() == 1)
				{
					if ($i < $this->object->getRowCount() - 1)
					{
						array_push($style, "border-bottom: 1px solid $bordercolor!important");
					}
				}
				if (count($style))
				{
					$tplrow->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
				}
				$tplrow->parseCurrentBlock();
			}

			if (strlen($this->object->getNeutralColumn()))
			{
				$j = $this->object->getRowCount();
				switch ($this->object->getSubtype())
				{
					case 0:
						$tplrow->setCurrentBlock("neutral_radiobutton");
						$tplrow->setVariable("IMAGE_RADIO", ilUtil::getHtmlPath(ilUtil::getImagePath("radiobutton_unchecked.gif")));
						$tplrow->setVariable("ALT_RADIO", $this->lng->txt("unchecked"));
						$tplrow->setVariable("TITLE_RADIO", $this->lng->txt("unchecked"));
						$tplrow->parseCurrentBlock();
						break;
					case 1:
						$tplrow->setCurrentBlock("neutral_checkbox");
						$tplrow->setVariable("IMAGE_CHECKBOX", ilUtil::getHtmlPath(ilUtil::getImagePath("checkbox_unchecked.gif")));
						$tplrow->setVariable("ALT_CHECKBOX", $this->lng->txt("unchecked"));
						$tplrow->setVariable("TITLE_CHECKBOX", $this->lng->txt("unchecked"));
						$tplrow->parseCurrentBlock();
						break;
				}
				$tplrow->setCurrentBlock("neutral_answer");
				$style = array();
				if ($this->object->getNeutralColumnSeparator())
				{
					array_push($style, "border-left: $neutralstyle!important");
				}
				if ($this->object->getColumnSeparators() == 1)
				{
					if ($j < $this->object->getColumnCount() - 1)
					{
						array_push($style, "border-right: 1px solid $bordercolor!important");
					}
				}

				if ($this->object->getRowSeparators() == 1)
				{
					if ($i < $this->object->getRowCount() - 1)
					{
						array_push($style, "border-bottom: 1px solid $bordercolor!important");
					}
				}
				if (count($style))
				{
					$tplrow->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
				}
				$tplrow->parseCurrentBlock();
			}

			$tplrow->setVariable("TEXT_ROW", ilUtil::prepareFormOutput($this->object->getRow($i)));
			$tplrow->setVariable("ROWCLASS", $rowclass[$i % 2]);
			if ($this->object->getRowSeparators() == 1)
			{
				if ($i < $this->object->getRowCount() - 1)
				{
					$tplrow->setVariable("STYLE", " style=\"border-bottom: 1px solid $bordercolor!important\"");
				}
			}
			$template->setCurrentBlock("matrix_row");
			$template->setVariable("ROW", $tplrow->get());
			$template->parseCurrentBlock();
		}
		
		if ($question_title)
		{
			$template->setVariable("QUESTION_TITLE", ilUtil::prepareFormOutput($this->object->getTitle()));
		}
		$template->setCurrentBlock();
		if ($show_questiontext)
		{
			$questiontext = $this->object->getQuestiontext();
			$template->setVariable("QUESTIONTEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));
		}
		if (! $this->object->getObligatory())
		{
			$template->setVariable("OBLIGATORY_TEXT", $this->lng->txt("survey_question_optional"));
		}
		$template->parseCurrentBlock();
		return $template->get();
	}
	
/**
* Creates a preview of the question
*
* Creates a preview of the question
*
* @access private
*/
	function preview()
	{
		$this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_preview.html", "Modules/SurveyQuestionPool");
		$question_output = $this->getWorkingForm();
		$this->tpl->setVariable("QUESTION_OUTPUT", $question_output);
	}
	
/**
* Creates a layout view of the question
*
* Creates a layout view of the question
*
* @access public
*/
	function layout()
	{
		$this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_layout.html", "Modules/SurveyQuestionPool");
		$this->show_layout_row = TRUE;
		$question_output = $this->getWorkingForm();
		$this->tpl->setVariable("QUESTION_OUTPUT", $question_output);
		$this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this, "saveLayout"));
		$this->tpl->setVariable("SAVE", $this->lng->txt("save"));
	}
	
/**
 * Saves the layout for the matrix question
 *
 * Saves the layout for the matrix question
 *
 * @return void
 **/
	function saveLayout()
	{
		$this->object->saveLayout($_POST["percent_row"], $_POST['percent_columns'], $_POST['percent_bipolar_adjective1'], $_POST['percent_bipolar_adjective2'], $_POST["percent_neutral"]);
		$percent_values = array(
			"percent_row" => $_POST["percent_row"],
			"percent_columns" => $_POST["percent_columns"],
			"percent_bipolar_adjective1" => $_POST['percent_bipolar_adjective1'],
			"percent_bipolar_adjective2" => $_POST['percent_bipolar_adjective2'],
			"percent_neutral" => $_POST["percent_neutral"]
		);
		$this->object->setLayout($percent_values);
		$this->layout();
	}

/**
* Creates a row to define the matrix question layout with percentage values
* 
* Creates a row to define the matrix question layout with percentage values
*
* @access public
*/
	function getLayoutRow()
	{
		$percent_values = $this->object->getLayout();
		$template = new ilTemplate("tpl.il_svy_out_matrix_layout.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
		if (strlen($this->object->getBipolarAdjective(0)) && strlen($this->object->getBipolarAdjective(1)))
		{
			$template->setCurrentBlock("bipolar_start");
			$template->setVariable("VALUE_PERCENT_BIPOLAR_ADJECTIVE1", " value=\"" . $percent_values["percent_bipolar_adjective1"] . "\"");
			$template->setVariable("STYLE", " style=\"width:" . $percent_values["percent_bipolar_adjective1"] . "%\"");
			$template->parseCurrentBlock();
			$template->setCurrentBlock("bipolar_end");
			$template->setVariable("VALUE_PERCENT_BIPOLAR_ADJECTIVE2", " value=\"" . $percent_values["percent_bipolar_adjective2"] . "\"");
			$template->setVariable("STYLE", " style=\"width:" . $percent_values["percent_bipolar_adjective2"] . "%\"");
			$template->parseCurrentBlock();
		}
		if (strlen($this->object->getNeutralColumn()))
		{
			$template->setCurrentBlock("bipolar_end");
			$template->setVariable("VALUE_PERCENT_NEUTRAL", " value=\"" . $percent_values["percent_neutral"] . "\"");
			$template->setVariable("STYLE_NEUTRAL", " style=\"width:" . $percent_values["percent_neutral"] . "%\"");
			$template->parseCurrentBlock();
		}
		$template->setVariable("VALUE_PERCENT_ROW", " value=\"" . $percent_values["percent_row"] . "\"");
		$template->setVariable("STYLE_ROW", " style=\"width:" . $percent_values["percent_row"] . "%\"");
		$counter = $this->object->getColumnCount();
		$template->setVariable("COLSPAN_COLUMNS", $counter);
		$template->setVariable("VALUE_PERCENT_COLUMNS", " value=\"" . $percent_values["percent_columns"] . "\"");
		$template->setVariable("STYLE_COLUMNS", " style=\"width:" . $percent_values["percent_columns"] . "%\"");
		return $template->get();
	}
	
/**
* Evaluates a posted edit form and writes the form data in the question object
*
* Evaluates a posted edit form and writes the form data in the question object
*
* @return integer A positive value, if one of the required fields wasn't set, else 0
* @access private
*/
	function writePostData() 
	{
		$result = 0;
		if ((!$_POST["title"]) or (!$_POST["author"]) or (!$_POST["question"])) $result = 1;
		if ($result == 1) $this->addErrorMessage($this->lng->txt("fill_out_all_required_fields"));
		// Set the question id from a hidden form parameter
		if ($_POST["id"] > 0) $this->object->setId($_POST["id"]);
		include_once "./Services/Utilities/classes/class.ilUtil.php";
		$this->object->setTitle(ilUtil::stripSlashes($_POST["title"]));
		$this->object->setAuthor(ilUtil::stripSlashes($_POST["author"]));
		$this->object->setDescription(ilUtil::stripSlashes($_POST["description"]));
		$this->object->setOrientation($_POST["orientation"]);
		if (strlen($_POST["material"]))
		{
			$this->object->setMaterial($_POST["material"], 0, ilUtil::stripSlashes($_POST["material_title"]));
		}
		include_once "./Services/AdvancedEditing/classes/class.ilObjAdvancedEditing.php";
		$questiontext = ilUtil::stripSlashes($_POST["question"], true, ilObjAdvancedEditing::_getUsedHTMLTagsAsString("survey"));
		$this->object->setQuestiontext($questiontext);
		if ($_POST["obligatory"])
		{
			$this->object->setObligatory(1);
		}
		else
		{
			$this->object->setObligatory(0);
		}
		$this->object->setSubtype($_POST["subtype"]);
		$this->object->setRowSeparators(($_POST["row_separators"]) ? 1 : 0);
		$this->object->setColumnSeparators(($_POST["column_separators"]) ? 1 : 0);
		$this->object->setNeutralColumnSeparator(($_POST["neutral_column_separator"]) ? 1 : 0);

		if ($saved) 
		{
			// If the question was saved automatically before an upload, we have to make
			// sure, that the state after the upload is saved. Otherwise the user could be
			// irritated, if he presses cancel, because he only has the question state before
			// the upload process.
			$this->object->saveToDb();
		}
    return $result;
  }

/**
* Moves a column up
*
* Moves a column up
*
* @access public
*/
	function moveColumnUp($column)
	{
		$complete = $this->writeRowColData();
		$columntext = $this->object->getColumn($column);
		$this->object->removeColumn($column);
		$this->object->addColumnAtPosition($columntext, $column - 1);
		$_SESSION["spl_modified"] = TRUE;
	}

/**
* Moves a column down
*
* Moves a column down
*
* @access public
*/
	function moveColumnDown($column)
	{
		$complete = $this->writeRowColData();
		$columntext = $this->object->getColumn($column);
		$this->object->removeColumn($column);
		$this->object->addColumnAtPosition($columntext, $column + 1);
		$_SESSION["spl_modified"] = TRUE;
	}
	
/**
* Creates the form to edit the question columns
*
* Creates the form to edit the question columns
*
* @access private
*/
	function categories()
	{
		if (count($_POST) == 0) $_SESSION["spl_modified"] = FALSE;
		if (is_array($_POST))
		{
			foreach ($_POST as $key => $value)
			{
				if (preg_match("/moveUp_(\d+)_x/", $key, $matches))
				{
					$this->moveColumnUp($matches[1]);
				}
				if (preg_match("/moveDown_(\d+)_x/", $key, $matches))
				{
					$this->moveColumnDown($matches[1]);
				}
			}
		}
		if ($this->object->getId() < 1) 
		{
			ilUtil::sendInfo($this->lng->txt("fill_out_all_required_fields_add_category"), true);
			$this->ctrl->redirect($this, "editQuestion");
		}
		$this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_matrix_answers.html", "Modules/SurveyQuestionPool");
		
		// check for ordinal columns
		if ($this->object->getSubtype() == 0)
		{
			$this->tpl->setCurrentBlock("ordinal");
			$this->tpl->setVariable("TEXT_COLUMN_SETTINGS", $this->lng->txt("matrix_column_settings"));
			$this->tpl->setVariable("TEXT_BIPOLAR_ADJECTIVES", $this->lng->txt("matrix_bipolar_adjectives"));
			$this->tpl->setVariable("TEXT_BIPOLAR_ADJECTIVES_DESCRIPTION", $this->lng->txt("matrix_bipolar_adjectives_description"));
			$this->tpl->setVariable("TEXT_ADJECTIVE_1", $this->lng->txt("matrix_adjective") . " 1");
			$this->tpl->setVariable("TEXT_ADJECTIVE_2", $this->lng->txt("matrix_adjective") . " 2");
			$this->tpl->setVariable("VALUE_BIPOLAR1", " value=\"" . ilUtil::prepareFormOutput($this->object->getBipolarAdjective(0)) . "\"");
			$this->tpl->setVariable("VALUE_BIPOLAR2", " value=\"" . ilUtil::prepareFormOutput($this->object->getBipolarAdjective(1)) . "\"");
			$this->tpl->setVariable("SAVE", $this->lng->txt("save"));
			$this->tpl->parseCurrentBlock();
		}
		
		// create an empty column if nothing is defined
		if ($this->object->getColumnCount() == 0)
		{
			$this->object->addColumn("");
		}
		if (strcmp($this->ctrl->getCmd(), "addColumn") == 0)
		{
			$nrOfCategories = $_POST["nrOfCategories"];
			if ($nrOfCategories < 1) $nrOfCategories = 1;
			// Create template for a new column
			for ($i = 1; $i <= $nrOfCategories; $i++)
			{
				$this->object->addColumn("");
			}
		}
    // output of existing single response answers
		$hasneutralcolumn = FALSE;
		for ($i = 0; $i < $this->object->getColumnCount(); $i++) 
		{
			$column = $this->object->getColumn($i);
			if ($this->object->getColumnCount() > 1)
			{
				if ($i == 0)
				{
					$this->tpl->setCurrentBlock("move_down");
					$this->tpl->setVariable("IMAGE_DOWN", ilUtil::getImagePath("a_down.gif"));
					$this->tpl->setVariable("ALT_DOWN", $this->lng->txt("move_down"));
					$this->tpl->setVariable("TITLE_DOWN", $this->lng->txt("move_down"));
					$this->tpl->setVariable("COLUMN", $i);
					$this->tpl->parseCurrentBlock();
				}
				else if ($i == $this->object->getColumnCount() - 1)
				{
					$this->tpl->setCurrentBlock("move_up");
					$this->tpl->setVariable("IMAGE_UP", ilUtil::getImagePath("a_up.gif"));
					$this->tpl->setVariable("ALT_UP", $this->lng->txt("move_up"));
					$this->tpl->setVariable("TITLE_UP", $this->lng->txt("move_up"));
					$this->tpl->setVariable("COLUMN", $i);
					$this->tpl->parseCurrentBlock();
				}
				else
				{
					$this->tpl->setCurrentBlock("move_down");
					$this->tpl->setVariable("IMAGE_DOWN", ilUtil::getImagePath("a_down.gif"));
					$this->tpl->setVariable("ALT_DOWN", $this->lng->txt("move_down"));
					$this->tpl->setVariable("TITLE_DOWN", $this->lng->txt("move_down"));
					$this->tpl->setVariable("COLUMN", $i);
					$this->tpl->parseCurrentBlock();
					$this->tpl->setCurrentBlock("move_up");
					$this->tpl->setVariable("IMAGE_UP", ilUtil::getImagePath("a_up.gif"));
					$this->tpl->setVariable("ALT_UP", $this->lng->txt("move_up"));
					$this->tpl->setVariable("TITLE_UP", $this->lng->txt("move_up"));
					$this->tpl->setVariable("COLUMN", $i);
					$this->tpl->parseCurrentBlock();
				}
			}
			$this->tpl->setCurrentBlock("categories");
			$this->tpl->setVariable("CATEGORY_ORDER", $i);
			$this->tpl->setVariable("CATEGORY_ORDER", $i);
			$this->tpl->setVariable("CATEGORY_NUMBER", $i+1);
			$this->tpl->setVariable("VALUE_CATEGORY", $column);
			$this->tpl->setVariable("TEXT_CATEGORY", $this->lng->txt("category"));
			$this->tpl->parseCurrentBlock();
		}
		
		if (strlen($this->object->getNeutralColumn()))
		{
			$this->tpl->setVariable("VALUE_NEUTRAL", " value=\"" . ilUtil::prepareFormOutput($this->object->getNeutralColumn()) . "\"");
		}
		$this->tpl->setVariable("CATEGORY_NEUTRAL", $this->object->getColumnCount() + 1);

		if ($this->object->getRowCount() == 0)
		{
			$this->object->addRow("");
		}
		if (strcmp($this->ctrl->getCmd(), "addRow") == 0)
		{
			$nrOfRows = $_POST["nrOfRows"];
			if ($nrOfRows < 1) $nrOfRows = 1;
			// Create template for a new column
			for ($i = 1; $i <= $nrOfRows; $i++)
			{
				$this->object->addRow("");
			}
		}
    // output of existing rows
		for ($i = 0; $i < $this->object->getRowCount(); $i++) 
		{
			$this->tpl->setCurrentBlock("rows");
			$this->tpl->setVariable("ROW_ORDER", $i);
			$row = $this->object->getRow($i);
			$this->tpl->setVariable("ROW_ORDER", $i);
			$this->tpl->setVariable("ROW_NUMBER", $i+1);
			$this->tpl->setVariable("VALUE_ROW", $row);
			$this->tpl->setVariable("TEXT_ROW", $this->lng->txt("row"));
			$this->tpl->parseCurrentBlock();
		}
		
		include_once "./Services/Utilities/classes/class.ilUtil.php";
		if ($this->object->getColumnCount() > 0)
		{
			$this->tpl->setCurrentBlock("selectall");
			$this->tpl->setVariable("SELECT_ALL", $this->lng->txt("select_all"));
			$this->tpl->parseCurrentBlock();
			$this->tpl->setCurrentBlock("existingcategories");
			$this->tpl->setVariable("DELETE", $this->lng->txt("delete"));
			$this->tpl->setVariable("VALUE_SAVE_PHRASE", $this->lng->txt("save_phrase"));
			$this->tpl->setVariable("ARROW", "<img src=\"" . ilUtil::getImagePath("arrow_downright.gif") . "\" alt=\"".$this->lng->txt("arrow_downright")."\">");
			$this->tpl->parseCurrentBlock();
		}

		if ($this->object->getRowCount() > 0)
		{
			$this->tpl->setCurrentBlock("selectall_rows");
			$this->tpl->setVariable("SELECT_ALL", $this->lng->txt("select_all"));
			$this->tpl->parseCurrentBlock();
		}

		for ($i = 1; $i < 10; $i++)
		{
			$this->tpl->setCurrentBlock("numbers");
			$this->tpl->setVariable("VALUE_NUMBER", $i);
			if ($i == 1)
			{
				$this->tpl->setVariable("TEXT_NUMBER", $i . " " . $this->lng->txt("category"));
			}
			else
			{
				$this->tpl->setVariable("TEXT_NUMBER", $i . " " . $this->lng->txt("categories"));
			}
			$this->tpl->parseCurrentBlock();
			$this->tpl->setCurrentBlock("rownumbers");
			$this->tpl->setVariable("VALUE_NUMBER", $i);
			if ($i == 1)
			{
				$this->tpl->setVariable("TEXT_NUMBER", $i . " " . $this->lng->txt("row"));
			}
			else
			{
				$this->tpl->setVariable("TEXT_NUMBER", $i . " " . $this->lng->txt("rows"));
			}
			$this->tpl->parseCurrentBlock();
		}
		
		$this->tpl->setCurrentBlock("adm_content");
		$this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this, "categories"));
		$this->tpl->setVariable("TEXT_ANSWERS", $this->lng->txt("matrix_columns"));
		$this->tpl->setVariable("VALUE_ADD_CATEGORY", $this->lng->txt("add"));
		$this->tpl->setVariable("VALUE_ADD_PHRASE", $this->lng->txt("add_phrase"));
		$this->tpl->setVariable("TEXT_STANDARD_ANSWERS", $this->lng->txt("matrix_standard_answers"));
		$this->tpl->setVariable("TEXT_NEUTRAL_ANSWER", $this->lng->txt("matrix_neutral_answer"));
		if (!$hasneutralcolumn)
		{
			$this->tpl->setVariable("CATEGORY_NEUTRAL", $this->object->getColumnCount()+1);
		}
		$this->tpl->setVariable("SAVE", $this->lng->txt("save"));
		
		$this->tpl->setVariable("TEXT_ROWS", $this->lng->txt("matrix_rows"));
		$this->tpl->setVariable("SAVEROWS", $this->lng->txt("save"));
		$this->tpl->setVariable("VALUE_ADD_ROW", $this->lng->txt("add"));
		$this->tpl->setVariable("DELETE", $this->lng->txt("delete"));
		$this->tpl->setVariable("ARROW", "<img src=\"" . ilUtil::getImagePath("arrow_downright.gif") . "\" alt=\"".$this->lng->txt("arrow_downright")."\">");
		
		if ($_SESSION["spl_modified"])
		{
			$this->tpl->setVariable("FORM_DATA_MODIFIED_PRESS_SAVE", $this->lng->txt("form_data_modified_press_save"));
		}
		$questiontext = $this->object->getQuestiontext();
		$this->tpl->setVariable("QUESTION_TEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));
		$this->tpl->parseCurrentBlock();
	}
	
	function setQuestionTabs()
	{
		global $rbacsystem,$ilTabs;
		$this->ctrl->setParameterByClass("$guiclass", "sel_question_types", $this->getQuestionType());
		$this->ctrl->setParameterByClass("$guiclass", "q_id", $_GET["q_id"]);

		if (($_GET["calling_survey"] > 0) || ($_GET["new_for_survey"] > 0))
		{
			$ref_id = $_GET["calling_survey"];
			if (!strlen($ref_id)) $ref_id = $_GET["new_for_survey"];
			$addurl = "";
			if (strlen($_GET["new_for_survey"]))
			{
				$addurl = "&new_id=" . $_GET["q_id"];
			}
			$ilTabs->setBackTarget($this->lng->txt("menubacktosurvey"), "ilias.php?baseClass=ilObjSurveyGUI&ref_id=$ref_id&cmd=questions" . $addurl);
		}
		else
		{
			$ilTabs->setBackTarget($this->lng->txt("spl"), $this->ctrl->getLinkTargetByClass("ilObjSurveyQuestionPoolGUI", "questions"));
		}
		if ($_GET["q_id"])
		{
			$ilTabs->addTarget("preview",
				$this->ctrl->getLinkTarget($this, "preview"), 
				array("preview"),
				"",
				"");
				
			$ilTabs->addTarget("layout",
				$this->ctrl->getLinkTarget($this, "layout"), 
				array("layout", "saveLayout"),
				"",
				"");
		}
		if ($rbacsystem->checkAccess('edit', $_GET["ref_id"])) 
		{
			$ilTabs->addTarget("edit_properties",
				$this->ctrl->getLinkTarget($this, "editQuestion"), 
				array("editQuestion", "cancelExplorer", "linkChilds", "addGIT", "addST",
					"addPG", "editQuestion", "addMaterial", "removeMaterial", 
					"save", "cancel"),
				"",
				"");
		}

		if ($this->object->getId() > 0) 
		{
			$ilTabs->addTarget("matrix_columns_rows",
				$this->ctrl->getLinkTarget($this, "categories"), 
					array("categories", "addColumn", "addRow", "deleteRow", "moveColumn",
						"deleteColumn", "saveRowColEditor", "savePhrase", "addPhrase",
						"savePhrase", "addSelectedPhrase", "cancelViewPhrase", "confirmSavePhrase",
						"cancelSavePhrase", "confirmdeleteColumn", "canceldeleteColumn"),
				"",
				""
			);
		}
		
		if ($this->object->getId() > 0) 
		{
			$title = $this->lng->txt("edit") . " &quot;" . $this->object->getTitle() . "&quot";
		} 
		else 
		{
			$title = $this->lng->txt("create_new") . " " . $this->lng->txt($this->getQuestionType());
		}

		$this->tpl->setVariable("HEADER", $title);
	}

/**
* Creates an output for the addition of phrases
*
* Creates an output for the addition of phrases
*
* @access public
*/
  function addPhrase() 
	{
		$complete = $this->writeRowColData(true);
		$this->ctrl->setParameterByClass(get_class($this), "q_id", $this->object->getId());
		$this->ctrl->setParameterByClass("ilobjsurveyquestionpoolgui", "q_id", $this->object->getId());

		$this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_addphrase.html", "Modules/SurveyQuestionPool");

		// set the id to return to the selected question
		$this->tpl->setCurrentBlock("hidden");
		$this->tpl->setVariable("HIDDEN_NAME", "id");
		$this->tpl->setVariable("HIDDEN_VALUE", $this->object->getId());
		$this->tpl->parseCurrentBlock();

		include_once "./Modules/SurveyQuestionPool/classes/class.ilSurveyPhrases.php";
		$phrases =& ilSurveyPhrases::_getAvailablePhrases();
		$colors = array("tblrow1", "tblrow2");
		$counter = 0;
		foreach ($phrases as $phrase_id => $phrase_array)
		{
			$this->tpl->setCurrentBlock("phraserow");
			$this->tpl->setVariable("COLOR_CLASS", $colors[$counter++ % 2]);
			$this->tpl->setVariable("PHRASE_VALUE", $phrase_id);
			$this->tpl->setVariable("PHRASE_NAME", $phrase_array["title"]);
			$columns =& ilSurveyPhrases::_getCategoriesForPhrase($phrase_id);
			$this->tpl->setVariable("PHRASE_CONTENT", join($columns, ","));
			$this->tpl->parseCurrentBlock();
		}
		
		$this->tpl->setCurrentBlock("adm_content");
		$this->tpl->setVariable("TEXT_CANCEL", $this->lng->txt("cancel"));
		$this->tpl->setVariable("TEXT_PHRASE", $this->lng->txt("phrase"));
		$this->tpl->setVariable("TEXT_CONTENT", $this->lng->txt("categories"));
		$this->tpl->setVariable("TEXT_ADD_PHRASE", $this->lng->txt("add_phrase"));
		$this->tpl->setVariable("TEXT_INTRODUCTION",$this->lng->txt("add_phrase_introduction"));
		$this->tpl->setVariable("FORM_ACTION", $this->ctrl->getFormAction($this, "addPhrase"));
		$this->tpl->parseCurrentBlock();
	}

/**
* Cancels the form adding a phrase
*
* Cancels the form adding a phrase
*
* @access public
*/
	function cancelViewPhrase() 
	{
		$this->ctrl->redirect($this, "categories");
	}

/**
* Adds a selected phrase
*
* Adds a selected phrase
*
* @access public
*/
	function addSelectedPhrase() 
	{
		if (strcmp($_POST["phrases"], "") == 0)
		{
			ilUtil::sendInfo($this->lng->txt("select_phrase_to_add"));
			$this->addPhrase();
		}
		else
		{
			if (strcmp($this->object->getPhrase($_POST["phrases"]), "dp_standard_numbers") != 0)
			{
				$this->object->addPhrase($_POST["phrases"]);
				$this->object->saveColumnsToDb();
			}
			else
			{
				$this->addStandardNumbers();
				return;
			}
			$this->ctrl->redirect($this, "categories");
		}
	}
	
/**
* Creates an output for the addition of standard numbers
*
* Creates an output for the addition of standard numbers
*
* @access public
*/
  function addStandardNumbers() 
	{
		$this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_addphrase_standard_numbers.html", "Modules/SurveyQuestionPool");

		// set the id to return to the selected question
		$this->tpl->setCurrentBlock("hidden");
		$this->tpl->setVariable("HIDDEN_NAME", "id");
		$this->tpl->setVariable("HIDDEN_VALUE", $this->object->getId());
		$this->tpl->parseCurrentBlock();

		$this->tpl->setCurrentBlock("adm_content");
		$this->tpl->setVariable("ADD_STANDARD_NUMBERS", $this->lng->txt("add_standard_numbers"));
		$this->tpl->setVariable("TEXT_ADD_LIMITS", $this->lng->txt("add_limits_for_standard_numbers"));
		$this->tpl->setVariable("TEXT_LOWER_LIMIT",$this->lng->txt("lower_limit"));
		$this->tpl->setVariable("TEXT_UPPER_LIMIT",$this->lng->txt("upper_limit"));
		$this->tpl->setVariable("VALUE_LOWER_LIMIT", $_POST["lower_limit"]);
		$this->tpl->setVariable("VALUE_UPPER_LIMIT", $_POST["upper_limit"]);
		$this->tpl->setVariable("BTN_ADD",$this->lng->txt("add_phrase"));
		$this->tpl->setVariable("BTN_CANCEL",$this->lng->txt("cancel"));
		$this->tpl->setVariable("FORM_ACTION", $this->ctrl->getFormAction($this, "addStandardNumbers"));
		$this->tpl->parseCurrentBlock();
	}
	
/**
* Cancels the form adding standard numbers
*
* Cancels the form adding standard numbers
*
* @access public
*/
	function cancelStandardNumbers() 
	{
		$this->ctrl->redirect($this, "categories");
	}

/**
* Insert standard numbers to the question
*
* Insert standard numbers to the question
*
* @access public
*/
	function insertStandardNumbers() 
	{
		if ((strcmp($_POST["lower_limit"], "") == 0) or (strcmp($_POST["upper_limit"], "") == 0))
		{
			ilUtil::sendInfo($this->lng->txt("missing_upper_or_lower_limit"));
			$this->addStandardNumbers();
		}
		else if ((int)$_POST["upper_limit"] <= (int)$_POST["lower_limit"])
		{
			ilUtil::sendInfo($this->lng->txt("upper_limit_must_be_greater"));
			$this->addStandardNumbers();
		}
		else
		{
			$this->object->addStandardNumbers($_POST["lower_limit"], $_POST["upper_limit"]);
			$this->object->saveColumnsToDb();
			$this->ctrl->redirect($this, "categories");
		}
	}

/**
* Creates an output to save a phrase
*
* Creates an output to save a phrase
*
* @access public
*/
  function savePhrase() 
	{
		$complete = $this->writeRowColData(true);
		if (!$complete)
		{
			$_SESSION["spl_modified"] = TRUE;
			ilUtil::sendInfo($this->errormessage);
			return $this->categories();
		}
		$nothing_selected = true;
		if (array_key_exists("chb_category", $_POST))
		{
			if (count($_POST["chb_category"]))
			{
				$nothing_selected = false;
				$this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_savephrase.html", "Modules/SurveyQuestionPool");
				$rowclass = array("tblrow1", "tblrow2");
				$counter = 0;
				foreach ($_POST["chb_category"] as $column)
				{
					$this->tpl->setCurrentBlock("row");
					$this->tpl->setVariable("TXT_TITLE", $this->object->getColumn($column));
					$this->tpl->setVariable("COLOR_CLASS", $rowclass[$counter % 2]);
					$this->tpl->parseCurrentBlock();
					$this->tpl->setCurrentBlock("hidden");
					$this->tpl->setVariable("HIDDEN_NAME", "chb_category[]");
					$this->tpl->setVariable("HIDDEN_VALUE", $column["title"]);
					$this->tpl->parseCurrentBlock();
				}
			
				$this->tpl->setCurrentBlock("adm_content");
				$this->tpl->setVariable("SAVE_PHRASE_INTRODUCTION", $this->lng->txt("save_phrase_introduction"));
				$this->tpl->setVariable("TEXT_PHRASE_TITLE", $this->lng->txt("enter_phrase_title"));
				$this->tpl->setVariable("TXT_TITLE", $this->lng->txt("category"));
				$this->tpl->setVariable("VALUE_PHRASE_TITLE", $_POST["phrase_title"]);
				$this->tpl->setVariable("BTN_CANCEL",$this->lng->txt("cancel"));
				$this->tpl->setVariable("BTN_CONFIRM",$this->lng->txt("confirm"));
				$this->tpl->setVariable("FORM_ACTION", $this->ctrl->getFormAction($this, "savePhrase"));
				$this->tpl->parseCurrentBlock();
			}
		}
		if ($nothing_selected)
		{
			ilUtil::sendInfo($this->lng->txt("check_category_to_save_phrase"), true);
			$this->ctrl->redirect($this, "categories");
		}
	}

/**
* Cancels the form saving a phrase
*
* Cancels the form saving a phrase
*
* @access public
*/
	function cancelSavePhrase() 
	{
		$this->ctrl->redirect($this, "categories");
	}

/**
* Save a new phrase to the database
*
* Save a new phrase to the database
*
* @access public
*/
	function confirmSavePhrase() 
	{
		if (!$_POST["phrase_title"])
		{
			ilUtil::sendInfo($this->lng->txt("qpl_savephrase_empty"));
			$this->savePhrase();
			return;
		}
		
		if ($this->object->phraseExists($_POST["phrase_title"]))
		{
			ilUtil::sendInfo($this->lng->txt("qpl_savephrase_exists"));
			$this->savePhrase();
			return;
		}

		$this->object->savePhrase($_POST["chb_category"], $_POST["phrase_title"]);
		ilUtil::sendInfo($this->lng->txt("phrase_saved"), true);
		$this->ctrl->redirect($this, "categories");
	}

/**
* Adds a column to the question
*
* Adds a column to the question
*
* @access private
*/
	function addColumn()
	{
		$result = $this->writeRowColData();
		$_SESSION["spl_modified"] = true;
		$this->categories();
	}


/**
* Adds a row to the question
*
* Adds a row to the question
*
* @access private
*/
	function addRow()
	{
		$this->addColumn();
	}

/**
* Saves the columns and rows of the question
*
* Saves the columns and rows of the question
*
* @param boolean $save If set to true the POST data will be saved to the database
* @access private
*/
	function writeRowColData($save = FALSE)
	{
    // Delete all existing columns and create new columns from the form data
    $this->object->flushColumns();
    $this->object->flushRows();
		$columnscomplete = TRUE;
		$rowscomplete = TRUE;
    // Add standard columns and rows
		include_once "./Services/Utilities/classes/class.ilUtil.php";
		$cats = "";
		$rows = "";
		foreach ($_POST as $key => $value) 
		{
			if (preg_match("/^category_(\d+)/", $key, $matches)) 
			{
				$this->object->addColumn(ilUtil::stripSlashes($value));
				$cats .= $value;
			}
			if (preg_match("/^row_(\d+)/", $key, $matches)) 
			{
				$this->object->addRow(ilUtil::stripSlashes($value));
				$rows .= $value;
			}
		}

		if (strlen($cats) == 0) 
		{
			$columnscomplete = FALSE;
			$this->addErrorMessage($this->lng->txt("matrix_error_no_columns"));
		}
		if (strlen($rows) == 0) 
		{
			$rowscomplete = FALSE;
			$this->addErrorMessage($this->lng->txt("matrix_error_no_rows"));
		}

    // Set neutral column
		$this->object->setNeutralColumn(ilUtil::stripSlashes($_POST["neutral"]));

		// Set bipolar adjectives
		$this->object->setBipolarAdjective(0, ilUtil::stripSlashes($_POST["bipolar1"]));
		$this->object->setBipolarAdjective(1, ilUtil::stripSlashes($_POST["bipolar2"]));

		if ($save)
		{	
			$this->object->saveColumnsToDb();
			$this->object->saveRowsToDb();
			if (array_key_exists("bipolar1", $_POST))
			{
				$this->object->saveBipolarAdjectives(ilUtil::stripSlashes($_POST["bipolar1"]), ilUtil::stripSlashes($_POST["bipolar2"]));
			}
		}

		return $columnscomplete && $rowscomplete;
	}

/**
* Saves the rows and columns
*
* Saves the rows and columns
*
* @access private
*/
	function saveRowColEditor()
	{
		global $ilUser;
		
		$complete = $this->writeRowColData(true);
		if (!$complete)
		{
			$_SESSION["spl_modified"] = TRUE;
			$this->categories();
		}
		else
		{
			$_SESSION["spl_modified"] = FALSE;
			ilUtil::sendInfo($this->lng->txt("saved_successfully"), true);
			$originalexists = $this->object->_questionExists($this->object->original_id);
			$this->ctrl->setParameter($this, "q_id", $this->object->getId());
			include_once "./Modules/SurveyQuestionPool/classes/class.SurveyQuestion.php";
			if ($_GET["calling_survey"] && $originalexists && SurveyQuestion::_isWriteable($this->object->original_id, $ilUser->getId()))
			{
				$this->originalSyncForm();
				return;
			}
			else
			{
				$this->ctrl->redirect($this, "categories");
			}
		}
	}

/**
* Removes one or more columns
*
* Removes one or more columns
*
* @access private
*/
	function deleteColumn()
	{
		$this->writeRowColData();
		$nothing_selected = true;
		if (array_key_exists("chb_category", $_POST))
		{
			if (count($_POST["chb_category"]))
			{
				$nothing_selected = false;
				$this->object->removeColumns($_POST["chb_category"]);
			}
		}
		if ($nothing_selected) 
		{
			ilUtil::sendInfo($this->lng->txt("matrix_column_delete_select_none"));
		}
		else
		{
			$_SESSION["spl_modified"] = true;
		}
		$this->categories();
	}

/**
* Removes one or more rows
*
* Removes one or more rows
*
* @access private
*/
	function deleteRow()
	{
		$this->writeRowColData();
		$nothing_selected = true;
		if (array_key_exists("chb_row", $_POST))
		{
			if (count($_POST["chb_row"]))
			{
				$nothing_selected = false;
				$this->object->removeRows($_POST["chb_row"]);
			}
		}
		if ($nothing_selected) 
		{
			ilUtil::sendInfo($this->lng->txt("matrix_row_delete_select_none"));
		}
		else
		{
			$_SESSION["spl_modified"] = true;
		}
		$this->categories();
	}
	
/**
* Creates the cumulated results row for the question
*
* Creates the cumulated results row for the question
*
* @return string HTML text with the cumulated results
* @access private
*/
	function getCumulatedResultRow($counter, $css_class, $survey_id)
	{
		$output = "";
		include_once "./classes/class.ilTemplate.php";
		if (count($this->cumulated) == 0)
		{
			include_once "./Modules/Survey/classes/class.ilObjSurvey.php";
			$nr_of_users = ilObjSurvey::_getNrOfParticipants($survey_id);
			$this->cumulated =& $this->object->getCumulatedResults($survey_id, $nr_of_users);
		}
		$template = new ilTemplate("tpl.il_svy_svy_cumulated_results_row.html", TRUE, TRUE, "Modules/Survey");
		$template->setVariable("QUESTION_TITLE", ($counter+1) . ". ".$this->object->getTitle());
		$maxlen = 37;
		$questiontext = preg_replace("/\<[^>]+?>/ims", "", $this->object->getQuestiontext());
		if (strlen($questiontext) > $maxlen + 3)
		{
			$questiontext = substr($questiontext, 0, $maxlen) . "...";
		}
		$template->setVariable("QUESTION_TEXT", $questiontext);
		$template->setVariable("USERS_ANSWERED", $this->cumulated["TOTAL"]["USERS_ANSWERED"]);
		$template->setVariable("USERS_SKIPPED", $this->cumulated["TOTAL"]["USERS_SKIPPED"]);
		$template->setVariable("QUESTION_TYPE", $this->lng->txt($this->cumulated["TOTAL"]["QUESTION_TYPE"]));
		$template->setVariable("MODE", $this->cumulated["TOTAL"]["MODE"]);
		$template->setVariable("MODE_NR_OF_SELECTIONS", $this->cumulated["TOTAL"]["MODE_NR_OF_SELECTIONS"]);
		$template->setVariable("MEDIAN", $this->cumulated["TOTAL"]["MEDIAN"]);
		$template->setVariable("ARITHMETIC_MEAN", $this->cumulated["TOTAL"]["ARITHMETIC_MEAN"]);
		$template->setVariable("COLOR_CLASS", $css_class);
		$output = $template->get();
		foreach ($this->cumulated as $key => $value)
		{
			if (is_numeric($key))
			{
				$template = new ilTemplate("tpl.il_svy_svy_cumulated_results_row_matrix.html", TRUE, TRUE, "Modules/Survey");
				$template->setVariable("QUESTION_TITLE", "");
				$template->setVariable("ROW", ($key+1) . ". " . $value["ROW"]);
				$template->setVariable("USERS_ANSWERED", $value["USERS_ANSWERED"]);
				$template->setVariable("USERS_SKIPPED", $value["USERS_SKIPPED"]);
				$template->setVariable("MODE", $value["MODE"]);
				$template->setVariable("MODE_NR_OF_SELECTIONS", $value["MODE_NR_OF_SELECTIONS"]);
				$template->setVariable("MEDIAN", $value["MEDIAN"]);
				$template->setVariable("ARITHMETIC_MEAN", $value["ARITHMETIC_MEAN"]);
				$template->setVariable("COLOR_CLASS", $css_class);
				$output .= $template->get();
			}
		}
		return $output;
	}

/**
* Creates the detailed output of the cumulated results for the question
*
* Creates the detailed output of the cumulated results for the question
*
* @param integer $survey_id The database ID of the survey
* @param integer $counter The counter of the question position in the survey
* @return string HTML text with the cumulated results
* @access private
*/
	function getCumulatedResultsDetails($survey_id, $counter)
	{
		if (count($this->cumulated) == 0)
		{
			include_once "./Modules/Survey/classes/class.ilObjSurvey.php";
			$nr_of_users = ilObjSurvey::_getNrOfParticipants($survey_id);
			$this->cumulated =& $this->object->getCumulatedResults($survey_id, $nr_of_users);
		}
		
		$output = "";
		include_once "./classes/class.ilTemplate.php";
		$template = new ilTemplate("tpl.il_svy_svy_cumulated_results_detail.html", TRUE, TRUE, "Modules/Survey");
		
		$template->setCurrentBlock("detail_row");
		$template->setVariable("TEXT_OPTION", $this->lng->txt("question"));
		$questiontext = $this->object->getQuestiontext();
		$template->setVariable("TEXT_OPTION_VALUE", $this->object->prepareTextareaOutput($questiontext, TRUE));
		$template->parseCurrentBlock();
		$template->setCurrentBlock("detail_row");
		$template->setVariable("TEXT_OPTION", $this->lng->txt("question_type"));
		$template->setVariable("TEXT_OPTION_VALUE", $this->lng->txt($this->getQuestionType()));
		$template->parseCurrentBlock();
		$template->setCurrentBlock("detail_row");
		$template->setVariable("TEXT_OPTION", $this->lng->txt("users_answered"));
		$template->setVariable("TEXT_OPTION_VALUE", $this->cumulated["TOTAL"]["USERS_ANSWERED"]);
		$template->parseCurrentBlock();
		$template->setCurrentBlock("detail_row");
		$template->setVariable("TEXT_OPTION", $this->lng->txt("users_skipped"));
		$template->setVariable("TEXT_OPTION_VALUE", $this->cumulated["TOTAL"]["USERS_SKIPPED"]);
		$template->parseCurrentBlock();
		
		$template->setCurrentBlock("detail_row");
		$template->setVariable("TEXT_OPTION", $this->lng->txt("mode"));
		$template->setVariable("TEXT_OPTION_VALUE", $this->cumulated["TOTAL"]["MODE"]);
		$template->parseCurrentBlock();
		$template->setCurrentBlock("detail_row");
		$template->setVariable("TEXT_OPTION", $this->lng->txt("mode_nr_of_selections"));
		$template->setVariable("TEXT_OPTION_VALUE", $this->cumulated["TOTAL"]["MODE_NR_OF_SELECTIONS"]);
		$template->parseCurrentBlock();
		$template->setCurrentBlock("detail_row");
		$template->setVariable("TEXT_OPTION", $this->lng->txt("median"));
		$template->setVariable("TEXT_OPTION_VALUE", $this->cumulated["TOTAL"]["MEDIAN"]);
		$template->parseCurrentBlock();
		
		$template->setCurrentBlock("detail_row");
		$template->setVariable("TEXT_OPTION", $this->lng->txt("categories"));
		$columns = "";
		foreach ($this->cumulated["TOTAL"]["variables"] as $key => $value)
		{
			$columns .= "<li>" . $this->lng->txt("title") . ":" . "<span class=\"bold\">" . $value["title"] . "</span><br />" .
				$this->lng->txt("category_nr_selected") . ": " . "<span class=\"bold\">" . $value["selected"] . "</span><br />" .
				$this->lng->txt("percentage_of_selections") . ": " . "<span class=\"bold\">" . sprintf("%.2f", 100*$value["percentage"]) . "</span></li>";
		}
		$columns = "<ol>$columns</ol>";
		$template->setVariable("TEXT_OPTION_VALUE", $columns);
		$template->parseCurrentBlock();
		
		foreach ($this->cumulated as $key => $value)
		{
			if (is_numeric($key))
			{
				$template->setCurrentBlock("detail_row");
				$template->setVariable("TEXT_OPTION", $this->lng->txt("row"));
				$questiontext = $value["ROW"];
				$template->setVariable("TEXT_OPTION_VALUE", $this->object->prepareTextareaOutput($questiontext, TRUE));
				$template->parseCurrentBlock();
				$template->setCurrentBlock("detail_row");
				$template->setVariable("TEXT_OPTION", $this->lng->txt("users_answered"));
				$template->setVariable("TEXT_OPTION_VALUE", $value["USERS_ANSWERED"]);
				$template->parseCurrentBlock();
				$template->setCurrentBlock("detail_row");
				$template->setVariable("TEXT_OPTION", $this->lng->txt("users_skipped"));
				$template->setVariable("TEXT_OPTION_VALUE", $value["USERS_SKIPPED"]);
				$template->parseCurrentBlock();
				
				$template->setCurrentBlock("detail_row");
				$template->setVariable("TEXT_OPTION", $this->lng->txt("mode"));
				$template->setVariable("TEXT_OPTION_VALUE", $value["MODE"]);
				$template->parseCurrentBlock();
				$template->setCurrentBlock("detail_row");
				$template->setVariable("TEXT_OPTION", $this->lng->txt("mode_nr_of_selections"));
				$template->setVariable("TEXT_OPTION_VALUE", $value["MODE_NR_OF_SELECTIONS"]);
				$template->parseCurrentBlock();
				$template->setCurrentBlock("detail_row");
				$template->setVariable("TEXT_OPTION", $this->lng->txt("median"));
				$template->setVariable("TEXT_OPTION_VALUE", $value["MEDIAN"]);
				$template->parseCurrentBlock();
				
				$template->setCurrentBlock("detail_row");
				$template->setVariable("TEXT_OPTION", $this->lng->txt("categories"));
				$columns = "";
				foreach ($value["variables"] as $key => $value)
				{
					$columns .= "<li>" . $this->lng->txt("title") . ":" . "<span class=\"bold\">" . $value["title"] . "</span><br />" .
						$this->lng->txt("category_nr_selected") . ": " . "<span class=\"bold\">" . $value["selected"] . "</span><br />" .
						$this->lng->txt("percentage_of_selections") . ": " . "<span class=\"bold\">" . sprintf("%.2f", 100*$value["percentage"]) . "</span></li>";
				}
				$columns = "<ol>$columns</ol>";
				$template->setVariable("TEXT_OPTION_VALUE", $columns);
				$template->parseCurrentBlock();
			}
		}
		
		// display chart for matrix question for array $eval["variables"]
		foreach ($this->cumulated as $key => $value)
		{
			if (is_numeric($key))
			{
				$template->setCurrentBlock("chartimage");

				$charturl = "";
				include_once "./Services/Administration/classes/class.ilSetting.php";
				$surveySetting = new ilSetting("survey");
				if ($surveySetting->get("googlechart") == 1)
				{
					$chartcolors = array("2A4BD7", "9DAFFF", "1D6914", "81C57A", "814A19", "E9DEBB", "8126C0", "AD2323", "29D0D0", "FFEE33", "FF9233", "FFCDF3", "A0A0A0", "575757", "000000");
					$selections = array();
					$values = array();
					$maxselection = 0;
					foreach ($value["variables"] as $val)
					{
						if ($val["selected"] > $maxselection) $maxselection = $val["selected"];
						array_push($selections, $val["selected"]);
						array_push($values, str_replace(" ", "+", $val["title"]));
					}
					$chartwidth = 800;
					$selectionlabels = "";
					if ($maxselection % 2 == 0)
					{
						$selectionlabels = "0|" . ($maxselection / 2) . "|$maxselection";
					}
					else
					{
						$selectionlabels = "0|$maxselection";
					}
					$charturl = "http://chart.apis.google.com/chart?chco=" . implode("|", array_slice($chartcolors, 0, count($values))). "&cht=bvs&chs=" . $chartwidth . "x250&chd=t:" . implode(",", $selections) . "&chds=0,$maxselection&chxt=y,y&chxl=0:|$selectionlabels|1:||".str_replace(" ", "+", $this->lng->txt("mode_nr_of_selections"))."|" . "&chxr=1,0,$maxselection&chtt=" . str_replace(" ", "+", $value["ROW"]) . "&chbh=20," . round($chartwidth/(count($values)+1.5)) . "&chdl=" . implode("|", $values) . "&chdlp=b";
				}
				else
				{
					$this->ctrl->setParameterByClass("ilsurveyevaluationgui", "type", $key);
					$this->ctrl->setParameterByClass("ilsurveyevaluationgui", "survey", $survey_id);
					$this->ctrl->setParameterByClass("ilsurveyevaluationgui", "question", $this->object->getId());
					$charturl = $this->ctrl->getLinkTargetByClass("ilsurveyevaluationgui", "outChart");
				}
				$template->setVariable("CHART", $charturl);
				$template->setVariable("ALT_CHART", $this->lng->txt("chart"));
				$template->parseCurrentBlock();
			}
		}
		$template->setCurrentBlock("chart");
		$template->setVariable("TEXT_CHART", $this->lng->txt("chart"));
		$template->parseCurrentBlock();

		$template->setVariable("QUESTION_TITLE", "$counter. ".$this->object->getTitle());
		$output = $template->get();
		return $output;
	}

}
?>
